@harmoniclabs/cbor - npm Package Compare versions

Comparing version 1.1.3 to 1.1.4

dist/Cbor/index.d.ts

 import type { CborObj } from "../CborObj/index.js";
 import { CborString } from "../CborString/index.js";
+import { LazyCborObj } from "../LazyCborObj/LazyCborObj.js";
 /**
@@ -16,2 +17,7 @@ * static class that allows CBOR encoding and decoding
     };
+    static parseLazy(cbor: CborString | Uint8Array | string): LazyCborObj;
+    static parseLazyWithOffset(cbor: CborString | Uint8Array | string): {
+        parsed: LazyCborObj;
+        offset: number;
+    };
 }

dist/Cbor/index.js

@@ -18,2 +18,5 @@ "use strict";
 var assert_1 = require("../utils/assert.js");
+var LazyCborArray_1 = require("../LazyCborObj/LazyCborArray.js");
+var LazyCborMap_1 = require("../LazyCborObj/LazyCborMap.js");
+var LazyCborTag_1 = require("../LazyCborObj/LazyCborTag.js");
 /**
@@ -390,3 +393,3 @@ * @private to the module; not needed elsewhere
                     }
-                    return new CborArray_1.CborArray(arrOfCbors);
+                    return new CborArray_1.CborArray(arrOfCbors, { indefinite: length < 0 });
                 case Constants_1.MajorType.map:
@@ -410,3 +413,3 @@ var entries = [];
                     }
-                    return new CborMap_1.CborMap(entries);
+                    return new CborMap_1.CborMap(entries, { indefinite: length < 0 });
                 case Constants_1.MajorType.tag:
@@ -433,4 +436,319 @@ return new CborTag_1.CborTag(Number(length), parseCborObj());
     };
+    Cbor.parseLazy = function (cbor) {
+        return Cbor.parseLazyWithOffset(cbor).parsed;
+    };
+    Cbor.parseLazyWithOffset = function (cbor) {
+        if (typeof cbor === "string")
+            cbor = (0, uint8array_utils_1.fromHex)(cbor);
+        (0, assert_1.assert)((cbor instanceof Uint8Array) || CborString_1.CborString.isStrictInstance(cbor), "in 'Cbor.parse' expected an instance of 'CborString' or a 'Uint8Array' as input; got: " + cbor);
+        var bytes = cbor instanceof CborString_1.CborString ?
+            cbor.toBuffer() :
+            cbor;
+        /**
+         * number of bytes red
+         * */
+        var offset = 0;
+        function incrementOffsetBy(l) {
+            offset += l;
+        }
+        function getBytesOfLength(l) {
+            incrementOffsetBy(l);
+            return bytes.slice(offset - l, // offset has been incremented prior reading
+            offset);
+        }
+        function getUInt8() {
+            incrementOffsetBy(1);
+            return (0, uint8array_utils_1.readUInt8)(bytes, offset - 1 // offset has been incremented prior reading
+            );
+        }
+        ;
+        function getUInt16() {
+            incrementOffsetBy(2);
+            return (0, uint8array_utils_1.readUInt16BE)(bytes, offset - 2 // offset has been incremented prior reading
+            );
+        }
+        ;
+        function getUInt32() {
+            incrementOffsetBy(4);
+            return (0, uint8array_utils_1.readUInt32BE)(bytes, offset - 4 // offset has been incremented prior reading
+            );
+        }
+        ;
+        function getUInt64() {
+            incrementOffsetBy(8);
+            return (0, uint8array_utils_1.readBigUInt64BE)(bytes, offset - 8 // offset has been incremented prior reading
+            );
+        }
+        ;
+        function getFloat16() {
+            // increments the offset here
+            var floatBits = getUInt16();
+            var tempArrayBuffer = new ArrayBuffer(4);
+            var tempDataView = new DataView(tempArrayBuffer);
+            var sign = floatBits & 32768;
+            var exponent = floatBits & 31744;
+            var fraction = floatBits & 1023;
+            if (exponent === 0x7c00)
+                exponent = 0xff << 10;
+            else if (exponent !== 0)
+                exponent += (127 - 15) << 10;
+            else if (fraction !== 0)
+                return new CborSimple_1.CborSimple((sign !== 0 ? -1 : 1) * fraction * 5.960464477539063e-8, "float");
+            tempDataView.setUint32(0, sign << 16 | exponent << 13 | fraction << 13);
+            return new CborSimple_1.CborSimple(tempDataView.getFloat32(0), "float");
+        }
+        function getFloat32() {
+            incrementOffsetBy(4);
+            return new CborSimple_1.CborSimple((0, uint8array_utils_1.readFloat32BE)(bytes, offset - 4 // offset has been incremented prior reading
+            ), "float");
+        }
+        function getFloat64() {
+            incrementOffsetBy(8);
+            return new CborSimple_1.CborSimple((0, uint8array_utils_1.readFloat64BE)(bytes, offset - 8 // offset has been incremented prior reading
+            ), "float");
+        }
+        function incrementIfBreak() {
+            if ((0, uint8array_utils_1.readUInt8)(bytes, offset) !== 0xff)
+                return false;
+            incrementOffsetBy(1);
+            return true;
+        }
+        function getLength(addInfos) {
+            if (addInfos < 24)
+                return BigInt(addInfos);
+            if (addInfos === 24)
+                return BigInt(getUInt8());
+            if (addInfos === 25)
+                return BigInt(getUInt16());
+            if (addInfos === 26)
+                return BigInt(getUInt32());
+            if (addInfos === 27)
+                return getUInt64();
+            if (addInfos === 31)
+                return BigInt(-1); // indefinite length element follows
+            throw new BaseCborError_1.BaseCborError("Invalid length encoding while parsing CBOR");
+        }
+        function getIndefiniteElemLengthOfType(majorType) {
+            var headerByte = getUInt8();
+            if (headerByte === 0xff) // break indefinite
+                return BigInt(-1);
+            var elemLength = getLength(headerByte & 31);
+            if (elemLength < 0 || (headerByte >> 5 !== majorType))
+                throw new BaseCborError_1.BaseCborError("unexpected nested indefinite length element");
+            return elemLength;
+        }
+        function getTextOfLength(l) {
+            // increments offset while getting the bytes
+            return (0, uint8array_utils_1.toUtf8)(getBytesOfLength(l));
+        }
+        function getNextElemBytes() {
+            var elemStart = offset;
+            var headerByte = getUInt8();
+            var major = headerByte >> 5;
+            var addInfos = headerByte & 31;
+            if (major === Constants_1.MajorType.float_or_simple) {
+                if (addInfos === 25)
+                    return bytes.slice(elemStart, elemStart + 2);
+                if (addInfos === 26)
+                    return bytes.slice(elemStart, elemStart + 3);
+                if (addInfos === 27)
+                    return bytes.slice(elemStart, elemStart + 5);
+            }
+            var preLenOffset = offset;
+            var length = getLength(addInfos);
+            var postLenOffset = offset;
+            if (length < 0 &&
+                (major < 2 || major > 6)) {
+                throw new BaseCborError_1.BaseCborError("unexpected indefinite length element while parsing CBOR");
+            }
+            switch (major) {
+                case Constants_1.MajorType.unsigned: return bytes.slice(elemStart, postLenOffset);
+                case Constants_1.MajorType.negative: return bytes.slice(elemStart, postLenOffset);
+                case Constants_1.MajorType.bytes:
+                    if (length < 0) // data in UPLC v1.*.* serializes as indefinite length
+                     {
+                        var elementLength = void 0;
+                        while ((elementLength = getIndefiniteElemLengthOfType(major)) >= 0) {
+                            // this operation is done when calling
+                            // `getBytesOfLength( Number( elementLength )`
+                            /// in the non-lazy verision
+                            incrementOffsetBy(Number(elementLength));
+                        }
+                        return bytes.slice(elemStart, offset);
+                    }
+                    // definite length
+                    // void getBytesOfLength( Number( length ) )
+                    incrementOffsetBy(Number(length)); // this is the only part we need of the above function
+                    return bytes.slice(elemStart, offset);
+                case Constants_1.MajorType.text:
+                    if (length < 0) // indefinite length
+                     {
+                        var str = "";
+                        var l = 0;
+                        while ((l = Number(getIndefiniteElemLengthOfType(Constants_1.MajorType.text))) >= 0) {
+                            // str += getTextOfLength( l );
+                            incrementOffsetBy(l);
+                        }
+                        return bytes.slice(elemStart, offset);
+                    }
+                    // void getTextOfLength( Number( length ) );
+                    incrementOffsetBy(Number(length)); // this is the only part we need of the above function
+                    return bytes.slice(elemStart, offset);
+                case Constants_1.MajorType.array:
+                    if (length < 0) {
+                        while (!incrementIfBreak()) {
+                            void getNextElemBytes();
+                        }
+                    }
+                    else {
+                        for (var i = 0; i < length; i++) {
+                            void getNextElemBytes();
+                        }
+                    }
+                    return bytes.slice(elemStart, offset);
+                case Constants_1.MajorType.map:
+                    if (length < 0) {
+                        while (!incrementIfBreak()) {
+                            void getNextElemBytes();
+                            void getNextElemBytes();
+                        }
+                    }
+                    else {
+                        for (var i = 0; i < length; i++) {
+                            void getNextElemBytes();
+                            void getNextElemBytes();
+                        }
+                    }
+                    return bytes.slice(elemStart, offset);
+                case Constants_1.MajorType.tag:
+                    void getNextElemBytes();
+                    return bytes.slice(elemStart, offset);
+                case Constants_1.MajorType.float_or_simple:
+                    var nLen = Number(length);
+                    if (nLen === 20)
+                        return bytes.slice(elemStart, offset); // 0xf4
+                    if (nLen === 21)
+                        return bytes.slice(elemStart, offset); // 0xf5
+                    if (nLen === 22)
+                        return bytes.slice(elemStart, offset); // 0xf6
+                    if (nLen === 23)
+                        return bytes.slice(elemStart, offset); // 0xf7
+                    // flaots handled at the beginning of the function
+                    // since length isn't required
+                    throw new BaseCborError_1.BaseCborError("unrecognized simple value");
+                default:
+                    throw new BaseCborError_1.BaseCborError("unrecognized majorType: " + major);
+            }
+        }
+        function parseCborObj() {
+            var headerByte = getUInt8();
+            var major = headerByte >> 5;
+            var addInfos = headerByte & 31;
+            if (major === Constants_1.MajorType.float_or_simple) {
+                if (addInfos === 25)
+                    return getFloat16();
+                if (addInfos === 26)
+                    return getFloat32();
+                if (addInfos === 27)
+                    return getFloat64();
+            }
+            var length = getLength(addInfos);
+            if (length < 0 &&
+                (major < 2 || major > 6)) {
+                throw new BaseCborError_1.BaseCborError("unexpected indefinite length element while parsing CBOR");
+            }
+            switch (major) {
+                case Constants_1.MajorType.unsigned: return new CborUInt_1.CborUInt(length);
+                case Constants_1.MajorType.negative: return new CborNegInt_1.CborNegInt(-BigInt(1) - length);
+                case Constants_1.MajorType.bytes:
+                    if (length < 0) // data in UPLC v1.*.* serializes as indefinite length
+                     {
+                        var chunks = [];
+                        var fullUint8ArrayLength = 0;
+                        var elementLength = void 0;
+                        while ((elementLength = getIndefiniteElemLengthOfType(major)) >= 0) {
+                            fullUint8ArrayLength += Number(elementLength);
+                            chunks.push(getBytesOfLength(// increments offset
+                            Number(elementLength)));
+                        }
+                        var fullUint8Array = new Uint8Array(fullUint8ArrayLength);
+                        var fullUint8ArrayOffset = 0;
+                        for (var i = 0; i < chunks.length; ++i) {
+                            fullUint8Array.set(chunks[i], fullUint8ArrayOffset);
+                            fullUint8ArrayOffset += chunks[i].length;
+                        }
+                        return new CborBytes_1.CborBytes(Uint8Array.from(fullUint8Array));
+                    }
+                    // definite length
+                    return new CborBytes_1.CborBytes(getBytesOfLength(Number(length)));
+                case Constants_1.MajorType.text:
+                    if (length < 0) // indefinite length
+                     {
+                        var str = "";
+                        var l = 0;
+                        while ((l = Number(getIndefiniteElemLengthOfType(Constants_1.MajorType.text))) >= 0) {
+                            str += getTextOfLength(l);
+                        }
+                        return new CborText_1.CborText(str);
+                    }
+                    return new CborText_1.CborText(getTextOfLength(Number(length)));
+                case Constants_1.MajorType.array:
+                    if (length < 0) {
+                        var arr = [];
+                        while (!incrementIfBreak()) {
+                            arr.push(getNextElemBytes());
+                        }
+                        return new LazyCborArray_1.LazyCborArray(arr, { indefinite: true });
+                    }
+                    else {
+                        var arr = new Array(Number(length));
+                        for (var i = 0; i < length; i++) {
+                            arr[i] = getNextElemBytes();
+                        }
+                        return new LazyCborArray_1.LazyCborArray(arr, { indefinite: false });
+                    }
+                case Constants_1.MajorType.map:
+                    if (length < 0) {
+                        var entries = [];
+                        while (!incrementIfBreak()) {
+                            entries.push({
+                                k: getNextElemBytes(),
+                                v: getNextElemBytes()
+                            });
+                        }
+                        return new LazyCborMap_1.LazyCborMap(entries, { indefinite: true });
+                    }
+                    else {
+                        var entries = new Array(Number(length));
+                        for (var i = 0; i < length; i++) {
+                            entries[i] = {
+                                k: getNextElemBytes(),
+                                v: getNextElemBytes()
+                            };
+                        }
+                        return new LazyCborMap_1.LazyCborMap(entries, { indefinite: true });
+                    }
+                case Constants_1.MajorType.tag:
+                    return new LazyCborTag_1.LazyCborTag(Number(length), parseCborObj());
+                case Constants_1.MajorType.float_or_simple:
+                    var nLen = Number(length);
+                    if (nLen === 20)
+                        return new CborSimple_1.CborSimple(false); // 0xf4
+                    if (nLen === 21)
+                        return new CborSimple_1.CborSimple(true); // 0xf5
+                    if (nLen === 22)
+                        return new CborSimple_1.CborSimple(null); // 0xf6
+                    if (nLen === 23)
+                        return new CborSimple_1.CborSimple(undefined); // 0xf7
+                    // flaots handled at the beginning of the function
+                    // since length isn't required
+                    throw new BaseCborError_1.BaseCborError("unrecognized simple value");
+                default:
+                    throw new BaseCborError_1.BaseCborError("unrecognized majorType: " + major);
+            }
+        }
+        return { parsed: parseCborObj(), offset: offset };
+    };
     return Cbor;
 }());
 exports.Cbor = Cbor;

dist/CborObj/CborArray.js

@@ -13,10 +13,7 @@ "use strict";
 };
-var __importDefault = (this && this.__importDefault) || function (mod) {
-    return (mod && mod.__esModule) ? mod : { "default": mod };
-};
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.CborArray = exports.isRawCborArray = void 0;
 var obj_utils_1 = require("@harmoniclabs/obj-utils");
-var JsRuntime_1 = __importDefault(require("../utils/JsRuntime/index.js"));
 var CborObj_1 = require("./CborObj.js");
+var assert_1 = require("../utils/assert.js");
 function isRawCborArray(arr) {
@@ -36,3 +33,3 @@ if (typeof arr !== "object")
     function CborArray(array, options) {
-        JsRuntime_1.default.assert(Array.isArray(array) &&
+        (0, assert_1.assert)(Array.isArray(array) &&
             array.every(CborObj_1.isCborObj), "in 'CborArray' constructor: invalid input; got: " + array);
@@ -62,5 +59,3 @@ var indefinite = __assign(__assign({}, defaultOpts), options).indefinite;
     CborArray.prototype.clone = function () {
-        return new CborArray(this.array, {
-            indefinite: this.indefinite
-        });
+        return new CborArray(this.array, { indefinite: this.indefinite });
     };
@@ -67,0 +62,0 @@ return CborArray;

dist/CborObj/CborMap.js

@@ -71,5 +71,3 @@ "use strict";
     CborMap.prototype.clone = function () {
-        return new CborMap(this.map, {
-            indefinite: this.indefinite
-        });
+        return new CborMap(this.map, { indefinite: this.indefinite });
     };
@@ -76,0 +74,0 @@ return CborMap;

dist/index.d.ts

 export * from "./Cbor/index.js";
 export * from "./CanBeCborString.js";
 export * from "./CborObj/index.js";
+export * from "./LazyCborObj/index.js";
 export * from "./CborString/index.js";
@@ -5,0 +6,0 @@ export * from "./errors/index.js";

dist/index.js

@@ -20,2 +20,3 @@ "use strict";
 __exportStar(require("./CborObj/index.js"), exports);
+__exportStar(require("./LazyCborObj/index.js"), exports);
 __exportStar(require("./CborString/index.js"), exports);
@@ -22,0 +23,0 @@ __exportStar(require("./errors/index.js"), exports);

package.json

 {
   "name": "@harmoniclabs/cbor",
-  "version": "1.1.3",
+  "version": "1.1.4",
   "description": "cbor library for easy cbor parsing, manipulation and conversion",
@@ -5,0 +5,0 @@ "main": "./dist/index.js",

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Improved metrics

Total package byte prevSize

108330

increased by29.62%

Number of package files

70

increased by16.67%

Lines of code

2624

increased by26.52%

No dependency changes